HEATKEYS

UltraTools is a complete set of free DNS and domain tools, which test the health of your domain name servers, websites and online hosting environment.

intoDNS checks the health and configuration of DNS and mail servers.

Wormly offers server monitoring, website monitoring and uptime monitoring to keep you online and performing fast. Remote monitoring from outside the firewall alerts you when failures occur, while internal server health monitoring reveals problems bef...

DNSstuff offers DNS tools, Network tools, Email tools, DNS reporting and IP information gathering. Explore monitoring products and free DNS tools at DNSstuff.

SMTP Logic is a complete enterprise email gateway that integrates easily with your email infrastructure. Configure email routing, message tracking, compliance, anti-spam, deliverability, analytics, workflow, ad injection and much more using a simple ...

Free DNS Report. Complete DNS and IP Tools - Start of Authority(SOA), Name Server(NS), web server, mail server, blacklist and port testing.

Email Security Grader: Is your mail server secure? Take the test and get a security score for your corporate mail infrastructure.

MailRadar is a Linux oriented community offering you free set of tools and latest news, articles and tutorials regarding mail servers and UNIX-like OS

Offer free dynamic DNS and static DNS to any top level domains. DNS supports Dynamic IP that allow you to run websites, ftp, or mail servers through any broadband connections with dynamic IP.

SmarterTools develops mail server software, help desk software, and web analytics for small businesses, web hosts, and ISPs.